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arXiv · 0802.0558

Slow-light enhanced absorption for bio-chemical sensing applications: potential of low-contrast lossy materials

Jesper Pedersen·Sanshui Xiao·Niels Asger Mortensen
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Abstract

Slow-light enhanced absorption in liquid-infiltrated photonic crystals has recently been proposed as a route to compensate for the reduced optical path in typical lab-on-a-chip systems for bio-chemical sensing applications. A simple perturbative expression has been applied to ideal structures composed of lossless dielectrics. In this work we study the enhancement in structures composed of lossy dielectrics such as a polymer. For this particular sensing application we find that the material loss has an unexpected limited drawback and surprisingly, it may even add to increase the bandwidth for low-index contrast systems such as polymer devices.

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Jesper Pedersen, Sanshui Xiao, Niels Asger Mortensen. 2008-02-05. Slow-light enhanced absorption for bio-chemical sensing applications: potential of low-contrast lossy materials. https://doi.org/10.2971/jeos.2008.08007

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